This is a list of Frequently Asked Questions regarding this Qt release. Q: I'm using a Unix system and I downloaded the Zip package. However, when I try to run the configure script, I get the following error message: "bash: ./configure: /bin/sh^M: bad interpreter: No such file or directory" A: The problem here is converting files from Windows style line endings (CRLF) to Unix style line endings (LF). To avoid this problem, uncompress the file again and give the option "-a" to unzip, which will then add the correct line endings. Q: I'm running Windows XP and I downloaded the qt-win-eval-4.5.1-vs2008.exe version of Qt. However, when I try to run the examples I get an error saying: "The application failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem.". I reinstalled the package but the error persists. What am I doing wrong? A: The problem is an incorrect version of the CRT. Visual studio requires CRT90 while Windows XP comes with CRT80. To solve this problem, please install the 2008 CRT redistributable package from Microsoft.